Leonardo’s Last Supper – Renaissance Through Contemporary Art History (2023)

Leonardo left Florence in 1481 or 1482 for Milan, where he stayed for 20 years. In his letter of application to Duke Ludovico Sforza, Leonardo offered his services, primarily emphasizing his civil and military engineering skills, which included devising bridges, mortars, catapults, and other machines. Only at the end did he casually mention his ability to create sculptures and paintings. The Last Supper was commissioned by Duke Ludovico Sforza for the refectory (room used for communal meals) in the convent of Santa Maria delle Grazie in Milan.


“Leonardo imagined, and has succeeded in expressing, the desire that has entered the minds of the apostles to know who is betraying their Master. So in the face of each one may be seen love, fear, indignation, or grief at not being able to understand the meaning of Christ; and this excites no less astonishment than the obstinate hatred and treachery to be seen in Judas.” Giorgio Vasari,Lives of the Artists, 1568; translated by George Bull

Leonardo’s Last Supper – Renaissance Through Contemporary Art History (1)


Leonardo’s Last Supper – Renaissance Through Contemporary Art History (2)

The subject of theLast SupperisChrist’sfinal meal with his apostles before Judas identifies Christ to the authorities who arrest him. The Last Supper (a PassoverSeder) is remembered for two events:

Christ says to his apostles, “One of you will betray me,” and the apostles react, each according to his own personality. Referring to the Gospels, Leonardo depicts Philip asking, “Lord, is it I?” Christ replies, “He that dippeth his hand with me in the dish, the same shall betray me” (Matthew 26). We see Christ and Judas simultaneously reaching toward a plate that lies between them, even as Judas defensively backs away.

Leonardo also simultaneously depicts Christ blessing the bread and saying to the apostles, “Take, eat; this is my body” and blessing the wine and saying “Drink from it all of you; for this is my blood of the covenant, which is poured out for the forgiveness of sins” (Matthew 26). These words are the founding moment of the sacrament of the Eucharist (the miraculous transformation of the bread and wine into the body and blood of Christ).

Leonardo’s Last Supper – Renaissance Through Contemporary Art History (3)

Apostles identified

Leonardo’sLast Supperis dense with symbolic references. Attributes identify each apostle. For example, Judas Iscariot is recognized both as he reaches toward a plate beside Christ (Matthew 26) and because he clutches a purse containing his reward for identifying Christ to the authorities the following day. Peter, who sits beside Judas, holds a knife in his right hand, foreshadowing that Peter will sever the ear of a soldier as he attempts to protect Christ from arrest.

Suggestions of the heavenly

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The balanced composition is anchored by an equilateral triangle formed by Christ’s body. He sits below an arching pediment that, if completed, traces a circle. These ideal geometric forms refer to the renaissance interest in Neo-Platonism (an element of thehumanist revivalthat reconciles aspects of Greek philosophy with Christian theology).In his allegory, “The Cave,” theAncient Greekphilosopher Plato emphasized the imperfection of the earthly realm. Geometry, used by the Greeks to express heavenly perfection, has been used by Leonardo to celebrate Christ as the embodiment of heaven on earth.

Leonardo rendered a verdant landscape beyond the windows. Often interpreted as paradise, it has been suggested that this heavenly sanctuary can only be reached through Christ.

The twelve apostles are arranged as four groups of three and there are also three windows. The number three is often a reference to the Holy Trinity in Catholic art. In contrast, the number four is important in the classical tradition (e.g. Plato’s four virtues).

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The Last Supper in the early Renaissance

Andrea del Castagno’sLast Supperis typical of theearly Renaissance. The use oflinear perspective in combination with ornate forms such as the sphinxes on the ends of the bench and the marble paneling tend to detract from the spirituality of the event. In contrast, Leonardo simplified the architecture, eliminating unnecessary and distracting details so that the architecture can instead amplify the spirituality. The window and arching pediment even suggest a halo. By crowding all of the figures together, Leonardo uses the table as a barrier to separate the spiritual realm from the viewer’s earthly world. Paradoxically, Leonardo’s emphasis on spirituality results in a painting that is more naturalistic than Castagno’s.


During World War II, in August of 1943, theAllieslaunched a massive bombing campaign on Milan and its outskirts. The explosions and the ensuing fires killed over 700 people and destroyed many of the city’s most important buildings and monuments, including a significant portion of Santa Maria delle Grazie. Miraculously, the wall with the painting survived, probably because it had been shored up with sandbags and mattresses, but the roof of the refectory was blown off and the other walls were decimated. For several months, theLast Supperremained exposed to the elements, covered only with a tarp, until the refectory(the dining room of the monastery where theLast Supperwas painted)was rebuilt and a team of restorers began working to preserve and restore the painting.

But Leonardo’s work was already in a sad state well before bombs threatened to destroy it completely. Soon after it was completed on February 9, 1498, it began to deteriorate. Because Leonardo sought greater detail and luminosity than could be achieved with traditional fresco, he covered the wall with a double layer of dried plaster. Then, borrowing from panel painting, he added an undercoat of lead white to enhance the brightness of the oil and tempera that was applied on top. This experimental technique allowed for chromatic brilliance and extraordinary precision but because the painting is on a thin exterior wall, it amplified the effects of humidity, and the paint failed to properly adhere to the wall. Mold grew between the paint and the surface, and the presence of moisture caused constant peeling. By the second half of the sixteenth century, Giovanni Paulo Lomazzo stated that “the painting is all ruined.” The first restoration efforts took place beginning in 1726, and over the centuries they were followed by several more.

Over the past five hundred years the painting’s condition has been seriously compromised by these early restoration efforts, as well as by its location (the church is in an area prone to severe flooding); the materials and techniques Leonardo used; occupation by Napoleon’s army (who stabled horses in the refectory and reportedly lobbed bricks at the apostles’ heads); humidity, dust, and air pollution; and, most recently, the cumulative effect of crowding tourists.[2]

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After the destruction wrought by the bombing in World War II, restorers covered the painting with a thick layer of shellac (a kind of resin) in order to combat the moisture problems and keep the paint from peeling. They then began scraping away some of the layers of paint that had been applied over the years, uncovering what they believed to be Leonardo’s original brushstrokes. Finally, in 1977, the Italian government teamed with private corporations to fund a massive project to fully uncover the original painting. It took head restorer Pinin Brambilla Barcilon over twenty years to complete the effort, meticulously scraping away at the painting’s surface centimeter by centimeter with surgical tools and microscope. In 1999, when the fully restored painting—in its new, climate-controlled environment—was officially unveiled, critics around the globe arguedas to whether it is now true to the original, or irrevocably deformed, as only about 42.5% of the present surface is Leonardo’s work, 17.5% is lost, and the remaining 40% was added by previous restorers. (Most of this repainting can be found in the painting’s wall hangings and ceiling).

TheLast Supperis a prime example of how public and professional attitudes toward restoration efforts are not only often contentious, but change over time. Whereas in the nineteenth century and earlier, restorations focused on overpainting in order to present the illusion of a perfectly finished work, modern approaches tend to favor the exposure of missing pieces, and to make all additions visible and explicit. The current version of theLast Supperresembles little of what Leonardo created in 1498, but it makes visible the painting’s miraculous and tortured history.

Condition statistics

Number of years after its completion that deterioration was noted: 18
Number of bombs that have hit the refectory: 1
Number of years needed to complete the recent conservation project: 22
Number of years that Leonardo needed to complete the painting: 4
Number of research studies produced during conservation project: 60
Number of hours spent on the conservation project: 50,000
Percentage of the surface that is lost: 17.5
Percentage of the surface painted during the seven previous restorations: 40
Percentage of the surface that was painted by Leonardo: 42.5

  1. Dr. Steven Zucker and Dr. Beth Harris, "Leonardo, Last Supper," in Smarthistory, August 9, 2015, accessed March 2, 2023, https://smarthistory.org/leonardo-last-supper/.
  2. Backstory by Dr. Naraelle Hohensee
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